Firearm Accessories

The factory Colt 901 magazine adapter block conversion kit allows you to install any mil-spec AR15/M4 upper receiver and use mil-spec AR15/M4 magazines with your Colt 901 lower receiver. Includes magazine adapter block, buffer and spring.

Factory Colt complete bolt carrier group assembly for your 9mm AR15 SMG and is the only BCG manufactured to truly meet and exceed all Mil Spec standards. Compatible with full-auto or semi-auto receivers. The bolt carrier and bolts are MPI tested &...

Factory Colt semi-auto trigger spring for M4/M5/AR15 series of rifles.

Factory Colt rifle buffer action spring for AR15/M16 type rifles.

Factory Colt carbine collapsible stock assembly for M4/AR15 type rifles.

Factory Colt upper receiver assembly to build your AR15, M16 or M4. Compatible with all mil-spec AR15/M4/M16 lower receivers. Includes forward assist assembly, and ejection port cover. Manufactured to truly meet and exceed all Mil Spec standards.

All factory Colt mil-spec fire control parts needed for the AR15/M4 semi-automatic rifle. Includes: Trigger Trigger Spring Disconnector Disconnector Spring Hammer Hammer Spring 2 x Hammer/Trigger Pins

Factory Colt safety selector detent for M16/M4/AR15 type rifles

Factory Colt safety selector detent spring for M16/M4/AR15 type rifles

Factory Colt buffer retainer for all M16/M4/AR15 models except the SCW.

Factory Colt buffer retainer spring for all M16/M4/AR15 models except the SCW.

Factory Colt Carbine H2 Buffer containing two weights made from tungsten and one weight from steel. Heavy buffers reduce felt recoil as well as reduce the cyclic rate on full-auto rifles.